/*
 * Copyright 2017 Huawei Technologies Co., Ltd
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.servicecomb.common.rest.filter;

import io.servicecomb.core.Invocation;
import io.servicecomb.swagger.invocation.Response;
import io.vertx.core.buffer.Buffer;
import io.vertx.core.http.HttpClientRequest;
import io.vertx.core.http.HttpClientResponse;

public interface HttpClientFilter {
  int getOrder();

  // bodyBytes maybe be null
  void beforeSendRequest(Invocation invocation, HttpClientRequest clientRequest, Buffer requestBodyBuffer);

  // if finished, then return a none null response
  // if return a null response, then sdk will call next filter.afterReceive
  Response afterReceiveResponse(Invocation invocation, HttpClientResponse httpResponse, Buffer responseBodyBuffer)
      throws Exception;
}
